what would cause the rpms to go up n down while driving at normal speed

What is your question?

going 20 to 30 mph the rpms go up and down from 1000 to 2000 rpms . the engine does not rev up or feel like its bogging down. only thing i noticed is that the steering feels a little hard. powersteering pump is not whinning . could the pump be causing my rpms to go up n down?